<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色管理</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
          <el-table-column type="expand">
            <template slot-scope="scope">
              <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '','vcentr']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                <!-- 渲染一级权限 -->
                <el-col :span="5">
                  <el-tag closable @close="removeRightById()">{{item1.authName}}</el-tag>
                  <i class="el-icon-caret-right"></i>
                </el-col>
                <!-- 渲染二级和三级权限 -->
                <el-col :span="19">
                  <!-- 通过 for 循环 嵌套渲染二级权限 -->
                  <el-row :class="[i2 === 0 ? '' : 'bdtop','vcentr']" v-for="(item2,i2) in item1.children" :key="item2.id">
                    <el-col :span="6">
                      <el-tag type="success" closable @close="removeRightById()">{{item2.authName}}</el-tag>
                      <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="18">
                      <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                    </el-col>
                  </el-row>
                </el-col>
              </el-row>
              <!-- <pre>
                {{scope.row}}
              </pre> -->
            </template>
          </el-table-column>
          <!-- 索引列 -->
          <el-table-column type="index"></el-table-column>
          <el-table-column label="角色名称" prop="roleName"></el-table-column>
          <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
          <el-table-column label="操作">
              <template slot-scope="scope">
                  <el-button type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">编辑</el-button>
                  <el-button type="danger" icon="el-icon-delete" @click="removeRolesById(scope.row.id)">删除</el-button>
                  <el-button type="warning" icon="el-icon-setting" @click="showSetRightDialag(scope.row)">分配权限</el-button>
              </template>
          </el-table-column>
      </el-table>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
  title="添加角色"
  :visible.sync="addDialogVisible"
  width="50%"
  @close="addDialogClosed">
  <!-- 内容主体区域 -->
  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
  <el-form-item label="角色名称" prop="roleName">
    <el-input v-model="addForm.roleName"></el-input>
  </el-form-item>
  <el-form-item label="角色描述" prop="roleDesc">
    <el-input v-model="addForm.roleDesc"></el-input>
  </el-form-item>
  </el-form>
  <!-- 底部按钮区域 -->
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary"  @click="addRoles">确 定</el-button>
  </span>
</el-dialog>
<!-- 修改用户的对话框 -->
    <el-dialog
  title="修改角色"
  :visible.sync="editDialogVisible"
  width="50%"
  @close="editDialogClosed">
  <!-- 内容主体区域 -->
  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="80px">
  <el-form-item label="角色名称" prop="roleName">
    <el-input v-model="editForm.roleName"></el-input>
  </el-form-item>
  <el-form-item label="角色描述" prop="roleDesc">
    <el-input v-model="editForm.roleDesc"></el-input>
  </el-form-item>
  </el-form>
  <!-- 底部按钮区域 -->
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary"  @click="editRolesInfo">确 定</el-button>
  </span>
</el-dialog>
<!-- 分配权限对话框 -->
<el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisable"
  width="50%"
  @close="setRIghtDialogClosed"
  >
  <!-- 树形控件 -->
  <el-tree :data="rightlist" :props="treeProps" show-checkbox node-key="id" :default-expand-all='true' :default-checked-keys="defKeys" ref="treeRef"></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisable = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 所有角色列表数据
      rolelist: [],
      addDialogVisible: false,
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisable: false,
      // 所有权限数据
      rightlist: [
      ],
      // 树形控件的数据绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      // 默认选中的ID值数组
      defKeys: [],
      // 当前即将分配权限的id
      roleId: '',
      // 添加用户表单数据
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      addFormRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ]
      },
      editDialogVisible: false,
      // 修改用户表单数据
      editForm: {
        roleName: '',
        roleDesc: ''
      },
      editFormRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ]
      }
    }
  },
  created () {
    // 获取所有的角色列表
    this.getRoleList()
  },
  methods: {
    async getRoleList () {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolelist = res.data
      console.log(this.rolelist)
    },
    // 监听添加对话框关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addRoles () {
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        // 验证通过，可以发起网络请求
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        this.addDialogVisible = false
        // 重新获取数据列表
        this.getRoleList()
      })
    },
    // 展示编辑角色的对话框
    async showEditDialog (id) {
      // console.log(id)
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    editRolesInfo () {
      this.$refs.editFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put('roles/' + this.editForm.roleId, {
          roleName: this.editForm.roleName,
          roleDesc: this.editForm.roleDesc
        })
        // console.log(res.meta.status)0
        if (res.meta.status !== 200) {
          return this.$message.error('更新角色信息失败!')
        }
        this.editDialogVisible = false
        this.getRoleList()
        this.$message.success('更新角色信息成功!')
      })
    },
    // editRolesInfo () {
    //   this.$refs.editFormRef.validate(valid => {
    //     if (!valid) return
    //     this.$http
    //       .put('roles/' + this.editForm.roleId, {
    //         roleName: this.editForm.roleName,
    //         roleDesc: this.editForm.roleDesc
    //       })
    //       .then(res => {
    //         if (res.data.meta.status !== 200) {
    //           return this.$message.error('修改角色失败!')
    //         }
    //         this.editDialogVisible = false
    //         this.$message.success('修改角色成功!')
    //         this.getRoleList()
    //       })
    //   })
    // }
    // 根据id删除用户信息
    async removeRolesById (id) {
    // 弹框询问用户是否删除情况
      const confirmResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除,则返回值为字符串 confirm,如果取消则返回 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('角色删除失败')
      }
      this.$message.success('角色删除成功')
      this.getRoleList()
    },
    // 根据id删除对应的权限
    async removeRightById (role, rightId) {
      // 弹框提示用户是否提示删除
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('您取消了删除')
      }
      // console.log(123)
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败！')
      }
      // this.getRoleList()
      role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightDialag (role) {
      this.roleId = role.id
      // 获取所有权限
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限列表失败！')
      }
      // 把获取到的权限数据保存到data中
      console.log(res)
      this.rightlist = res.data
      // 递归获取三级节点id
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisable = true
    },
    // 通过递归形势获取角色下三级id
    getLeafKeys (node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭
    setRIghtDialogClosed () {
      this.defKeys = []
    },
    // 点击为角色分配权限
    async allotRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      // console.log(keys)
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRoleList()
      this.setRightDialogVisable = false
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcentr {
  display: flex;
  align-items: center;
}
</style>
